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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
agricultural and biological sciences
The geographical patterns of symbiont diversity in the invasive legume Mimosa pudica can be explained by the competitiveness of its symbionts and by the host genotype
Environmental Microbiology, Volume 16, No. 7, Year 2014
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Description
Variations in the patterns of diversity of symbionts have been described worldwide on Mimosa pudica, a pan-tropical invasive species that interacts with both α and β-rhizobia. In this study, we investigated if symbiont competitiveness can explain these variations and the apparent prevalence of β- over α-rhizobia. We developed an indirect method to measure the proportion of nodulation against a GFP reference strain and tested its reproducibility and efficiency. We estimated the competitiveness of 54 strains belonging to four species of β-rhizobia and four of α-rhizobia, and the influence of the host genotype on their competitiveness. Our results were compared with biogeographical patterns of symbionts and host varieties. We found: (i) a strong strain effect on competitiveness largely explained by the rhizobial species, with Burkholderia phymatum being the most competitive species, followed by B.tuberum, whereas all other species shared similar and reduced levels of competitiveness; (ii) plant genotype can increase the competitiveness of Cupriavidus taiwanensis. The latter data support the likelihood of the strong adaptation of C.taiwanensis with the M.pudica var. unijuga and help explain its prevalence as a symbiont of this variety over Burkholderia species in some environments, most notably in Taiwan. © 2013 Society for Applied Microbiology and John Wiley & Sons Ltd.
Authors & Co-Authors
Melkonian, Rémy
France, Montpellier
Ird Centre de Montpellier
Moulin, Lionel
France, Montpellier
Ird Centre de Montpellier
Béna, Gilles
France, Montpellier
Ird Centre de Montpellier
Tisseyre, Pierre
France, Montpellier
Ird Centre de Montpellier
Chaintreuil, Clémence
France, Montpellier
Ird Centre de Montpellier
Heulin, Karine
France, Montpellier
Inrae's Occitanie-montpellier Centre
Klonowska, Agnieszka
France, Montpellier
Ird Centre de Montpellier
Gonzalez, Sophie
France, Marseille
Ird Institut de Recherche Pour le Developpement
Simon, Marcelo F.
Brazil, Brasilia
Embrapa Recursos Geneticos e Biotecnologia
Chen, Wenming
Taiwan, Kaohsiung
National Kaohsiung University of Science and Technology
James, Euan Kevin
United Kingdom, Aberdeen
The James Hutton Institute
Laguerre, Gisèle
France, Montpellier
Inrae's Occitanie-montpellier Centre
Statistics
Citations: 32
Authors: 12
Affiliations: 6
Identifiers
Doi:
10.1111/1462-2920.12286
ISSN:
14622912
Research Areas
Genetics And Genomics
Study Design
Cross Sectional Study